Locking center-pin construction for railway cars



1929- J. F. O'CONNOR 1,742,006

LOCKING CENTER PIN CONSTRUCTION FOR RAILWAY CARS Filed April 9, 1928 MacMM Patented Dec. 31, 1929 UNITED STATES PATENT OFFICE JOHN F. OOONNOR,OF CHICAGO, ILLINOIS, ASSIGNOR TO V. H. MINER, INC., 0]?

CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE LOCKING OENTER-PINCONSTRUCTION FOR RAILWAY CARS Application filed April 9, 1928. SerialNo. 268,564.

This invention relates to improvements in locking center pinconstruction for railway cars.

' The mainobjectof the invention is to provide means for connecting thebody bolster ,of railway car to the co-operating truck member a, in sucha manner that accidental separation of the same is prevented, whereinthe connecting means includes a center pin provided with a detachablesectional locking head member and means embracing the same which holdsthe parts of the head against separation and thereby prevents accidentalremovalofthe head from the pin. Other and further objects of theinvention .will more clearly appear from the description andclaimshereinafter following.

Inthe drawing, forming a part of this specification, Figure 1 is a topplan view of the central section of the body bolster member of a railwaycar, illustrating my improvements in connect on therewith. Figure 2 isalongitudmal, vertical sectional view of the body bolster andco-operating truck bolster member, corresponding substantially to theline 22 of Figure 1. And Figure 3 is a horizontal sectional View,corresponding substantially to the line 33 of Figure 2, but

tatedto an angle of ninety degrees with respect to theposition shown inFigure 2.

In said drawings, 10 designates the body bolster of a railway carunderframe structure' and 1 1 the co-operatingtruck bolster member, themember 11 being the transom or arch member of the truck bolsterconstruction. The body bolster l0 isprovided with v a downwardlyprojecting bearing section 12,

4 l which co-operates with a'bearing block 13 supported on the truckbolster member ll.

Q The block 13'is disposed within the usual pocket 14 provided at thetop of the member The bearing members 12 and 13 are provided withco-operating spherical bearing 1 surfaces, and the member 13 has anupstandj ing central projecting portion 15 which engages within a recessat the center of the bearing member 12.

In carrying out myinvention, I provide the bolster members 10 and 11with aligned showing the parts of the sectional head rocenter pinreceiving openings 16 and 17. The body bolster member 10 is providedwith a pocket 18 at the top thereof, the pocket being aligned with thepin receiving opening 16 and being laterally elongated to provide pocketsections on opposite sides of the pin receiving opening 16. As clearlyshown in- Figures 1 and 3, the pocket is of greater length than width,the width of the same being slightly greater than the width of the oa'ening 16, and the side walls, which are indicated by 1919, formabutment means. or limiting shoulders for a purpose hereinafterdescribed. a

The truck bolster member 11 is provided with a circular p clretQO atthelower side thereof, which is in alignment with the opening 17 and isadapted to accommodate the head ofthe center pin.

My improved center pin locking arrangement proper comprises a center pinmember A and a detachable sectional locking head B. i

The center pin A extends through the openings 16 and 1'? of the bodyandtruck bolster members and, as shown, has the main body portionthereof of cylindrical form, and of smaller diameter than said openings.At the bottom end, the pin A is provided with a fixed head 21, which isaccommodated in the pocket 20. Adjacent the head 21, the pin is providedwith. an enlarged cylindrical portion 22 which substantially fits theopening 17. At the upper end, the pin A is provided with a head 23.which is of slightly smaller diameter than the pin receiving opening 16.Inwardly of th'ehead 23, the pin A is provided with a cylindricalenlarged section 24 which substantially fits the opening 16. The spacedhead 23 and enlargement 24 provide an annular groove 25 therebetween. Asclearly shown in Figure 2. the head 23 is disposed entirely within thepocket 18 and spaced above the bottom wall thereof.

The sectional head B comprises two blocks 2626, which are ofsemi-circular form and are adapted to embrace the head 23 andthe groovedportion 25 of the pin A. As shown, the blocks 26 are recessed on theirinner sides, 100 as indicated at 27, to fit the head 23. Each block isalso provided with an inwardly extending semi-circular flange 28 at thebottom. thereof, adapted to engage within the groove 25 of the pin. Eachblock 26 is also provided with an upstanding ear 29, the ears 29 and thetwo blocks being so disposed thatthey are diametrically opposite whenthe parts are assembled. The body bolster is also provided with a pairof ears 30 which are disposed at diametrically opposite sides of thepocket 18.

The ears 29 and 30 receive a retaining cotter pin 31 to prevent rotationof the sections of the head B when the parts are finally assembled.

The elongated pocket 18 is of such a size that the two blocks may bereadily inserted at opposite ends and then moved laterally toward eachother to embrace the head 23 of the pin and engage the flanges 28 of theblocks with the groove 25, as shown in Figure When thus engaged, theblocks are bodily rotated about the pin through an angle of ninetydegrees, so as to dispose the division line of the blocks substantiallyparallel to the side walls of the pocket 18, as shown in Figure 1. Whenthe head B has been rotated tothis position, the blocks 26 are heldagainst lateral separation by engagement with the side walls 19 of thepocket, the clearance between the head 23 and the side walls 19 of thepocket being such as to snugly accommodate the blocks 26. In order toprevent accidental rotation and displacement of the parts of the head B,the cotter pin 31 is inserted through the aligned openings of the ears29 and 30,

. so as to lock the parts together.

While I have herein shown and described what I consider the preferredmanner of carrying out my invention. the same is merely illustrative andI contemplate all changes and modifications which come within the S00 eof the claims appended hereto.

claim:

1. In a swiveled connection of a body bolster and a truck bolster memberof a railway car, the combination with a center pin extending throughthe body bolster and truck bolster member, said pin having a fixed headat one end; of a detachable head member, in eluding separable sectionssecured to the,

other end thereof; and fixed abutment means on one of said bolstersdirectly engaging and embracing said sections to prevent lateralseparation and removal thereof.

2. In a center pin locking arrangement for railway ears, the combinationwith a body bolster member and a truck bolster member, said membershaving aligned center pin receiving openings, one of saidmembers havinga pocket communicating with the pin receiving opening thereof, saidpocket being laterally extended beyond the opposite side walls of saidopening; of a pin extending through I said openings and having a head atone end having shouldered engagement with one of said members; asectional head secured to the other end of the pin and having shoulderedengagement with the other member, the sections of said head beingengaged with the pin by entering the same within the laterally extendedportions of said pocket, said sections when engaged with the pin beingrotatable to dispose the same in looking relation with said walls of thepocket, thereby preventing lateral separation of said sections.

3. In a railway car construction, the combination with a body bolstermember; of a truck bolster member on which the body bolster member isswiveled; a pin extending through said members, said pin having a headat one end, of larger size than the pin receiving opening, the other endof the pin having a head of a diameter not greater than the pinreceiving opening; a detachable sectional head member each' section ofwhich partly embraces said last-named head of the pin; and fixedabutment means at opposite sides of the pin receiving opening betweenwhich the sections of the head are laterally insertible and removable,said sections being rotatable about said head of the pin to posi tionthe pin embracing portions thereof between the pin and said abutmentmeans to prevent separation of said sections. I

4. In a center pin locking arrangement for railway cars, the combinationwith a body bolster member and a truck bolster member on which thefirst-named member is swiveled; ofa pin extending through said members,said pin having a head at the lower end, cooperating with abutment meanson the truck bolster'member, the said pin having an annular grooveadjacent the upper end thereof; a detachable sectional head memberembrac-' ing the upper end of'the pin and co-operating with abutmentmeans on the body bolster member, the sections of said head closelyembracing the pin and having inturned flanges seated in said groove; andupstanding abut ment faceson the body bolster at opposite sides of thepin receiving opening thereof, embracing the sectional head member topreventseparation of the sections thereof.

5 In a center pin locking arrangement for comprising a pair ofcomplementary block members embracing the pin, said block members havinginturned flange sections engaged Within the groove of the pin, saidblocks being embraced by the side walls of said pocket and held againstlateral separation thereby, said blocks being accommodated in thelaterally enlarged sections of the pocket when being assembled with thepin, and'being laterally displaceable toward each other in said pocketto permit engagement of the flanges thereof with the groove of the pinand being rotatable bodily in said pocket to dispose said sections onopposite sides of the pin between the pin and the side walls of thepocket to prevent lateral separation of said blocks.

.6. In a railway car construction, the combination with a body bolster;of a car truck bolster member on which the body bolster is swiveled,said body bolster and truck bolster member being provided with alignedcenter pin receiving openings, the body bolster being provided with apocket aligned with the center pin receiving opening thereof, saidpocket being of greater length than width; at center pin extendingthrough the openings of the body bolster and truck bolster members, saidpin being headed at the bottom end and having shouldered engagement withthe truck bolster member, said pin being cut away adjacent the oppositeend to provide a head member of not greater diameter than the pinreceiving openings of the bolster members; a detachable retainingelement accommodated in the pocket of the body bolster,

said retaining element comprising a pair of blocks embracing and fittingthe head at the upper end of the pin, said blocks having flange sectionsextending into the cut away portion of the pin and engaging in back ofsaid head, the side walls of the pocket embracing the blocks forming thesectional head to prevent lateral separation of the blocks when saidblocks are disposed on opposite sides of the pin between the same andthe side walls of the pocket; and detachable means for holding saidsectional head against rotation with respect to the body bolster.

In witness that I claim the foregoing I have hereunto subscribed my namethis 6th day of April, 1928.

JOHN F. OCONNOR.

